PMID- 31286748 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20200928 IS - 2233-6567 (Print) IS - 2233-6567 (Electronic) IS - 2233-6567 (Linking) VI - 34 IP - 2 DP - 2019 Jun TI - Eye irritation tests of polyhexamethylene guanidine phosphate (PHMG) and chloromethylisothiazolinone/methylisothiazolinone (CMIT/MIT) using a tissue model of reconstructed human cornea-like epithelium. PG - e2019004 LID - 10.5620/eht.e2019004 [doi] LID - e2019004 AB - Disinfectants including polyhexamethylene guanidine phosphate (PHMG) and mixtures of chloromethylisothiazolinone/ methylisothiazolinone (CMIT/MIT) have been widely used in Korea to prevent microbial growth in the humidifier water, which triggered an outbreak of serious respiratory diseases. In addition to the respiratory syndrome, disease-related symptoms including liver toxicity, asthma, and skin allergies were also found after extensive survey of people exposed to the humidifier disinfectants (HDs). In this study, eye irritation tests were performed based on the Organization for economic co-operation and development (OECD) test guidelines 492 using EpiOcularTM which is a tissue model of reconstructed human cornea-like epithelium. As results, the raw materials of PHMG (26% as active ingredient) and CMIT/MIT (1.5% as active ingredient) were classified under UN globally harmonized system of classification and labeling of chemical (GHS) category 1 or category 2. However, aqueous dilutions of raw materials such as market products of HDs that contain 0.13% of PHMG and 0.03% of CMIT/MIT or further dilutions of the market products for humidifier that contain 0.0013% of PHMG and 0.0003% of CMIT/MIT were classified under any category, which suggested absence of eye irritation at the test concentration. FAU - Park, Juyoung AU - Park J AD - College of Pharmacy, Dongduk Women's University, Seoul 02748, Korea. FAU - Lee, Handule AU - Lee H AD - College of Pharmacy, Dongduk Women's University, Seoul 02748, Korea. FAU - Park, Kwangsik AU - Park K AD - College of Pharmacy, Dongduk Women's University, Seoul 02748, Korea. LA - eng GR - 2017001360001/Korea ministry of environment/International PT - Journal Article DEP - 20190624 PL - Korea (South) TA - Environ Health Toxicol JT - Environmental health and toxicology JID - 101570455 PMC - PMC6620617 OTO - NOTNLM OT - EpiOcularTM OT - chloromethylisothiazolinone OT - eye irritation OT - methylisothiazolinone OT - polyhexamethylene guanidine phosphate COIS- The authors have no conflicts of interest associated with this study to disclose. EDAT- 2019/07/10 06:00 MHDA- 2019/07/10 06:01 PMCR- 2019/06/24 CRDT- 2019/07/10 06:00 PHST- 2019/03/09 00:00 [received] PHST- 2019/06/09 00:00 [accepted] PHST- 2019/07/10 06:00 [entrez] PHST- 2019/07/10 06:00 [pubmed] PHST- 2019/07/10 06:01 [medline] PHST- 2019/06/24 00:00 [pmc-release] AID - eht.e2019004 [pii] AID - eht-34-2-e2019004 [pii] AID - 10.5620/eht.e2019004 [doi] PST - ppublish SO - Environ Health Toxicol. 2019 Jun;34(2):e2019004. doi: 10.5620/eht.e2019004. Epub 2019 Jun 24.